- Forward stepwise logistic regression is similar…to liner regression in that we do it in rounds.…This movie explains that approach…to the first two rounds for…forward stepwise logistic regression.…This movie will describe Rounds 1 and 2…of our forward stepwise logistic regression approach.…I'll explain what goes into Round 1,…which is that we generate our fully specified models:…Models 1 and 2.…I'll explain what 'fully specified' means.…Next, I'll explain what we do in Round 2…where we begin to build the forward stepwise model.…

Some of this will be repetition to a degree,…because we went through this earlier in the course…doing our linear regression.…But I want to reinforce this approach…because it is just as important…when doing logistic regression.…So, the reality is, that like in linear regression,…you run a ton of iterative models…when doing a logistic regression model.…However, these runs can be organized…into three basic rounds as I call them.…I'll explain what I mean by this.…The first round is the easiest.…

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Released

1/19/2017

Linear and logistic regression models can be created using R, the open-source statistical computing software. In this course, biotech expert and epidemiologist Monika Wahi uses the publicly available Behavioral Risk Factor Surveillance Survey (BRFSS) dataset to show you how to perform a forward stepwise modeling process. Monika shows you how to design your research by considering scientific plausibility selecting a hypothesis. Then, she takes you through the steps of preparing, developing, and finalizing both a linear regression model and a logistic regression model. She also shares techniques for how to interpret diagnostic plots, improve model fit, compare models, and more.